• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry.
• Prevent others from touching the components.
• Before you install a static-sensitive option or CRU, do either of the following to reduce static electricity in
the package and your body:
– Touch the static-protective package that contains the part to a metal expansion-slot cover for at least
two seconds.
– Touch the static-protective package that contains the part to other unpainted metal surface on the
computer for at least two seconds.
• When possible, remove the static-sensitive part from the static-protective package and install the part
without setting it down. When this is not possible, place the static-protective package on a smooth, level
surface and place the part on the package.
• Do not place the part on the computer cover or other metal surface.
Disabling the built-in battery
Before replacing any CRU, ensure that you disable Fast Startup first and then disable the built-in battery.
To disable Fast Startup, do the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or Small
icons.
2. Click Power Options, and then click Choose what the power buttons do on the left pane.
3. Click Change settings that are currently unavailable at the top.
4. If prompted by User Account Control (UAC), click Yes.
5. Clear the Turn on fast startup check box, and then click Save changes.
To disable the built-in battery, do the following:
1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter ThinkPad
Setup.
2. Select Config ➙ Power. The Power submenu is displayed.
3. Select Disable built-in battery and press Enter.
4. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off
automatically. Wait three to five minutes to let the computer cool.
Replacing the nano SIM card
Before you start, read "Important safety information" on page v and print the following instructions.
Nano SIM card is a small plastic card with an Integrated Circuit (IC) chip mounted on one side of the card.
To replace the nano SIM card, do the following:
1. Insert a straightened paper clip into the hole in the nano-SIM-card tray
tray out of the computer
2. Take the nano SIM card out of the tray
3. Note the orientation of the new nano SIM card and then install it into the tray
4. Insert the tray with the new card into the computer
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X380 Yoga User Guide
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. The tray ejects. Then, slide the
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